Re: [Haskell-cafe] compilation succeeds -- execution fails

On Sat, Mar 29, 2008 at 10:21:32PM -0700, Jason Dusek wrote:

Stefan O'Rear wrote:

...

The only type that you are allowed to assume corresponds to a C int is CInt, in the Foreign.C.Types module. This probably isn't the problem, but it could make problems of its own on a 64-bit or otherwise weird system.

So say I turn everything back to pointers to CInt, what is the accepted way to convert from CInt to Int

Same as any other pair of whole-number types - fromIntegral.

and CInt to Char?

fromIntegral and toEnum

Is relying on the fact that CInt always wraps a Haskell integer an okay way to go?

What do you mean by wraps? It's an opaque type... Stefan